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Dr. Ping Chang, MD
NPI1124091194PAC ID1355253006
- Medicare services, 2024
- 980
- Medicare patients, 2024
- 356
- Part D claims, 2024
- 725
- Publications
- 48
- Hospital affiliations
- 6
- Practice address
- 2 Progress Point Pkwy, O Fallon, MO 63368
- Practice phone
- Call (636) 344-2273
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Ping Chang is an internist in O Fallon, Missouri
Dr. Chang practices at Progress West Hospital in O Fallon, Missouri, part of BJC Health.
Dr. Chang's NPI, 1124091194, was assigned on February 9, 2006. Dr. Chang holds Missouri license 2003022690.
NPI and contact details
- NPI
- 1124091194NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355253006
- NPI enumeration date
- February 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (636) 344-2273
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ping Chang practices at Progress West Hospital in O Fallon, Missouri
Dr. Chang's primary practice is Progress West Hospital, at 2 Progress Point Pkwy, O Fallon, MO 63368 in St. Charles County. The practice phone is (636) 344-2273.
- Progress West Hospital2 Progress Point Pkwy, O Fallon, MO 63368 · St. Charles CountyPhone(636) 344-2273
Source: Dmand AI Affiliation Data
Dr. Ping Chang is affiliated with 7 sites of care and 2 medical groups
Dr. Chang's primary practice is Progress West Hospital in O Fallon, Missouri, part of BJC Health. Dr. Chang is also affiliated with Barnes-Jewish Hospital. The medical group on file is Southeastern Physician Services PC. Dmand AI also links Dr. Chang to 4 more hospitals, 1 hospice and 1 medical group, each named with a free account.
Barnes-Jewish HospitalSoutheastern Physician Services PC4 hospitalsNames with a free account1 hospiceName with a free account1 medical groupName with a free account
See all 9 affiliations for Dr. ChangSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ping Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Progress West Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ping Chang is one of 2,114 internists in Missouri
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Chang
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ping Chang billed Medicare for 980 services in 2024
CMS data shows 980 Medicare services from Dr. Chang across 6 procedure codes in 2024, for 356 Medicare patients. Medicare paid $68,245 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024980
Medicare patients356
Paid by Medicare$68,245
Procedure codes6
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9202024: 9807%
Dr. Chang compared with the Missouri median for internists, 2024
- Dr. Chang
- Missouri median
- Medicare services
- 980vs 53085% above
- Medicare patients
- 356vs 21169% above
- Part D claims
- 395vs 32522% above
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ping Chang treated 356 Medicare patients in 2024, average age 76
CMS counts 356 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 132 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 72, with 50% women.
Medicare patients, 2024356
Average age76
Average risk score2.72
Also on Medicaid20%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women18452%
- Men17248%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis71%
- Chronic kidney disease56%
- Heart failure55%
- Mood disorders55%
- Ischemic heart disease54%
- Depression52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ping Chang wrote 725 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 725 Medicare Part D claims for 270 patients. 86% of them were for generic drugs. CMS names the drug for 395 of them, across 19 drugs with 11 or more claims each, at $16,278 in total drug cost. In 2023, CMS named 387 claims across 17 drugs.
Part D claims, 2024725
Drugs named by CMS19
Total drug cost$16,278
Part D patients270
Dr. Chang's Part D claims by kind of drug, 2024
- Generic626 claims86%
- Brand-name and other99 claims14%
Dr. Chang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chang's Part D claims, 2024
- Opioids6%44 of 725 claims
- Antibiotics15%107 of 725 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3872024: 3952%
Drugs named by CMS: 19 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ping Chang takes part in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ping Chang has 48 publications on record
Dmand AI links 48 papers to Dr. Chang, published from 2013 to 2025. 2024 was the busiest year, with 7. The most frequent topics are Sepsis, China and Intensive Care Units. Dr. Chang has published most often in Crit Care. Dr. Chang's most frequent co-authors are Robert F. Lodato, MD and Ping Wang, PTA.
Papers48
Years published2013 to 2025
Dr. Chang's papers by year, 2015 to 2025
Topics Dr. Chang writes about most
- Sepsis
- China
- Intensive Care Units
- Acute Kidney Injury
- Fluid Therapy
- Mice, Inbred C57BL
- Shock, Septic
- APACHE
Dr. Chang's most frequent co-authors
Recent publications by Dr. Chang
After-Hours CareExtracorporeal Membrane OxygenationHospital Mortality
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ping Chang received $298 in industry payments from 2017 to 2019
CMS Open Payments shows 5 general payments to Dr. Chang from 4 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $211.
General payments to Dr. Chang by program year, 2017 to 2019
Companies that paid Dr. Chang the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ping Chang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ping Chang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ping Chang's NPI number?
Dr. Ping Chang's NPI number is 1124091194. It was assigned on February 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ping Chang?
Dr. Ping Chang is an internist in O Fallon, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ping Chang practice?
Dr. Chang practices at 2 Progress Point Pkwy, O Fallon, MO 63368. Dr. Chang's primary practice is Progress West Hospital in O Fallon, Missouri, part of BJC Health. Dmand AI also links Dr. Chang to 4 hospitals, 1 hospice and 1 medical group.
What is Dr. Ping Chang's office phone number?
The practice phone on file for Dr. Chang is (636) 344-2273.
What is Dr. Ping Chang's medical license number?
Dr. Chang holds Missouri license 2003022690.
Which hospitals is Dr. Ping Chang affiliated with?
Dr. Chang practices at Progress West Hospital in O Fallon, Missouri. Dr. Chang is also affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Chang to 4 more hospitals.
What medical group is Dr. Ping Chang part of?
Dr. Chang is linked to Southeastern Physician Services PC. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Ping Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 980 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Ping Chang see?
CMS counts 356 Medicare patients who saw Dr. Chang in 2024, with an average age of 76.
What services does Dr. Ping Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).
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What drugs does Dr. Ping Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Carvedilol, Cefdinir and Atorvastatin Calcium.
Has Dr. Ping Chang received payments from drug or device companies?
CMS Open Payments shows $298 in general payments to Dr. Chang from 4 companies from 2017 to 2019. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ping Chang been practicing?
Dr. Chang graduated from medical school in 1988, 38 years ago.
Does Dr. Ping Chang do research?
Dmand AI links 48 publications to Dr. Chang, published from 2013 to 2025.
Who does Dr. Ping Chang publish with?
Dr. Chang's most frequent co-authors are Robert F. Lodato, MD (2 shared papers) and Ping Wang, PTA (1 shared paper).
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